The Ungava magmatic event was a widespread magmatic event that began about 2.22 billion years ago during the Proterozoic Eon. Extent With an area of , the Ungava magmatic event caused the formation of a large igneous province. Magmatic features that were formed during the Ungava magmatic event include the Klotz, Maguire and Senneterre dikes of Quebec and the Nipissing sills of Ontario. References Igneous petrology of Quebec Igneous petrology of Ontario Paleoproterozoic magmatism